Detections
Analytics

SCA: security update for react-router (GHSA-49rj-9fvp-4h2h)

high Tenable Self-Hosted Container Security Plugin ID 442604

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - React Router is a router for React. In versions 7.0.0 through 7.14.1, when using Framework Mode, a
 combination of steps could potentially allow unauthorized remote code execution (RCE) through external
 requests. This attack requires the application code to have an existing prototype pollution vulnerability,
 which can then be leveraged in a 2-step attack where the second step triggers unauthorized RCE on the
 remote server. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode
 (`createBrowserRouter/<RouterProvider>`). This is patched in version 7.14.2. (CVE-2026-42211)

Solution

Update the react-router library and its related packages to version 7.14.2 or later.

See Also

https://github.com/advisories/GHSA-49rj-9fvp-4h2h

Plugin Details

Severity: High

ID: 442604

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 6/4/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.92

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-42211

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/3/2026

Vulnerability Publication Date: 6/2/2026

Reference Information

CVE: CVE-2026-42211

cwe: CWE-502